All this is inevitably expensive, but Mrs Cheung insists that greater scale creates greater efficiency and reduces the cost per unit of output.

这一切必定花费高昂，但张女士坚持认为，规模愈大，效率愈高，而且每单位产量的成本也愈低。

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During the first quarter, energy intensity - measured as energy use per unit of output - actually increased, Mr. Zhang said.

在第一个季度中，能量密度——定义为每单位产出消耗的能源——事实上增加了，张先生说。

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The rich world is less vulnerable now because it has substantially reduced the amount of oil used per unit of output.

当今发达国家没那么易受影响是因为每单位产量的石油消耗量已大大减少。

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When anticipated supply is sufficiently high, gas undercuts coal as the fuel of choice for electrical generation, which results in reduced carbon dioxide emissions, as natural gas produces only about 50% to 70% of the carbon dioxide per unit output (depending upon your metric) that coal does.

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Hu has pledged to reduce carbon intensity, or the amount of carbon emitted per unit of economic output.

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In 2006, the first year of the plan, the country's reduction in energy intensity, which measures energy consumption per unit of economic output, was a mere 1.23%.

FORBES: Magazine Article